<?php
/**
 * 2007-2017 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to http://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2017 PrestaShop SA
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 */

class ToolsInstall
{
    /**
             * Converts a simpleXML element into an array. Preserves attributes and everything.
             * You can choose to get your elements either flattened, or stored in a custom index that
             * you define.
             * For example, for a given element
             * <field name="someName" type="someType"/>
             * if you choose to flatten attributes, you would get:
             * $array['field']['name'] = 'someName';
             * $array['field']['type'] = 'someType';
             * If you choose not to flatten, you get:
             * $array['field']['@attributes']['name'] = 'someName';
             * _____________________________________
             * Repeating fields are stored in indexed arrays. so for a markup such as:
             * <parent>
             * <child>a</child>
             * <child>b</child>
             * <child>c</child>
             * </parent>
             * you array would be:
             * $array['parent']['child'][0] = 'a';
             * $array['parent']['child'][1] = 'b';
             * ...And so on.
             * _____________________________________
             * @param simpleXMLElement $xml the XML to convert
             * @param bool $flattenValues    Choose wether to flatten values
             *                                    or to set them under a particular index.
             *                                    defaults to true;
             * @param bool $flattenAttributes Choose wether to flatten attributes
             *                                    or to set them under a particular index.
             *                                    Defaults to true;
             * @param bool $flattenChildren    Choose wether to flatten children
             *                                    or to set them under a particular index.
             *                                    Defaults to true;
             * @param string $valueKey            index for values, in case $flattenValues was set to
                            *                            false. Defaults to "@value"
             * @param string $attributesKey        index for attributes, in case $flattenAttributes was set to
                            *                            false. Defaults to "@attributes"
             * @param string $childrenKey        index for children, in case $flattenChildren was set to
                            *                            false. Defaults to "@children"
             * @return array the resulting array.
             */
    public static function simpleXMLToArray($xml, $flattenValues = true, $flattenAttributes = true, $flattenChildren = true, $valueKey = '@value', $attributesKey = '@attributes', $childrenKey = '@children')
    {
        $return = array();
        if (!($xml instanceof SimpleXMLElement)) {
            return $return;
        }

        $name = $xml->getName();
        $_value = trim((string)$xml);
        if (strlen($_value) == 0) {
            $_value = null;
        }

        if ($_value !== null) {
            if (!$flattenValues) {
                $return[$valueKey] = $_value;
            } else {
                $return = $_value;
            }
        }

        $children = array();
        $first = true;
        foreach ($xml->children() as $elementName => $child) {
            $value = ToolsInstall::simpleXMLToArray($child, $flattenValues, $flattenAttributes, $flattenChildren, $valueKey, $attributesKey, $childrenKey);
            if (isset($children[$elementName])) {
                if ($first) {
                    $temp = $children[$elementName];
                    unset($children[$elementName]);
                    $children[$elementName][] = $temp;
                    $first=false;
                }
                $children[$elementName][] = $value;
            } else {
                $children[$elementName] = $value;
            }
        }

        if (count($children) > 0) {
            if (!$flattenChildren) {
                $return[$childrenKey] = $children;
            } else {
                $return = array_merge($return, $children);
            }
        }

        $attributes = array();
        foreach ($xml->attributes() as $name => $value) {
            $attributes[$name] = trim($value);
        }

        if (count($attributes) > 0) {
            if (!$flattenAttributes) {
                $return[$attributesKey] = $attributes;
            } else {
                $return = array_merge($return, $attributes);
            }
        }

        return $return;
    }
}
